部分亚硝化和厌氧氨氧化处理家畜粪污消化液及其微生物群落分析。
Partial nitritation and anammox of a livestock manure digester liquor and analysis of its microbial community.
机构信息
Graduate School of Science and Technology, Kumamoto University, Kurokami, Kumamoto, Japan.
出版信息
Bioresour Technol. 2011 Feb;102(3):2342-7. doi: 10.1016/j.biortech.2010.10.091. Epub 2010 Oct 23.
A swim-bed reactor for partial nitritation with polymeric coagulant treatment and an UASB reactor for anammox were applied to the treatment of livestock manure digester liquor. The partial nitritation was maintained for 32 days under a 1.6 kg N/m(3)/d nitrogen loading rate (NLR) with an average conversion efficiency of 51%, and achieved 1.65 kg N/m(3)/d of the maximum nitrite production rate under 2.58 kg N/m(3)/d of NLR. Although 200 mg/L of TOC remained in the effluent of the partial nitritation reactor, the anammox nitrogen removal rate was not significantly decreased and a relatively high rate of 2.0 kg N/m(3)/d was obtained under a NLR of 2.2 kg N/m(3)/d. 16S rRNA gene analysis showed that Nitrosomonas and KSU-1 were dominant in the partial nitritation and anammox reactor, respectively. The results of this study demonstrated that the partial nitritation-anammox process has possibility of applying to the nitrogen removal of livestock manure digester liquor.
采用 swim-bed 型反应器进行部分亚硝化和 UASB 反应器进行厌氧氨氧化处理畜禽粪便消化液。在 1.6kg N/m³/d 的氮负荷（NLR）下，经过 32 天的时间维持部分亚硝化，平均转化率为 51%，在 2.58kg N/m³/d 的 NLR 下达到 1.65kg N/m³/d 的最大亚硝酸盐生成速率。尽管部分亚硝化反应器的出水中仍残留 200mg/L 的 TOC，但厌氧氨氧化的氮去除率并没有明显下降，在 2.2kg N/m³/d 的 NLR 下，仍获得了 2.0kg N/m³/d 的较高去除率。16S rRNA 基因分析表明，在部分亚硝化和厌氧氨氧化反应器中，分别以 Nitrosomonas 和 KSU-1 为优势菌属。本研究结果表明，部分亚硝化-厌氧氨氧化工艺有可能应用于畜禽粪便消化液的氮去除。
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